4X JBL GTO939 6X9” COAXIAL SPEAKERS + JBL STAGE-A604 4-CHANNEL FULL RANGE AMP 50036313773 | eBay
Amazon.com: JBL GTO939 GTO Series 6x9" 300W 3 Way Black Car Coaxial Audio Speakers Stereo : Electronics
GTO939 | This JBL series incorporates many patents that are also found in JBL's pro speakers
JBL GTO939 200W RMS 6"x9" 3-way Coaxial Car Speakers
JBL GTO939 200W RMS 6"x9" 3-way Coaxial Car Speakers
Amazon.com: JBL GTO939 Premium 6 x 9 Inches Co-Axial Speaker - Set of 2 & Metra 82-8148 6" to 6-3/4" Speaker Adapter for Select Toyota/Lexus/Scion 1998-Up Vehicles, Black : Electronics
JBL 6X9 GTO939) Detailed Review after 2 months Plus Demo - YouTube
JBL GTO939 200W RMS 6"x9" 3-way Coaxial Car Speakers